Method for eliminating large-particle inclusions in X55SiCrA spring steel continuous casting billet

• Main Authors: JIANG SHUANGHAI, PAN XIQUAN, SHI WEINING, JIANG YUHUI, WANG LIU, YANG BEI, YE MINGZAI, YU JIE
• Format: Patent
• Language: Chinese; English
• Published: 10.10.2023
• Subjects: ALLOYS; CASTING; CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; METALLURGY; PERFORMING OPERATIONS; POWDER METALLURGY; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention discloses a method for eliminating large-particle inclusions in an X55SiCrA spring steel continuous casting billet, and belongs to the technical field of steelmaking. The method comprises the following steps: pouring molten steel in a steel ladle to obtain a continuous casting billet; molten steel in the steel ladle is automatically drained through drainage sand to complete the casting process; the mass fraction of Cr2O3 in the stuffing sand is 20%-25%; the insertion depth of the long nozzle in the pouring process is more than 340 mm; and a current stabilizer is arranged in a steel receiving area of the tundish in the pouring process. When the continuous casting billet manufactured through the method is directly rolled without coping, the surface quality of a wire rod is good, and therefore the production cost is greatly reduced while the quality of the rolled wire rod is improved. 本发明公开了一种消除X55SiCrA弹簧钢连铸坯大颗粒夹杂物的方法，属于炼钢技术领域；该方法包括以下步骤：将钢包中钢水浇注制得连铸坯；钢包中钢水通过引流砂自动引流完成开浇过程；引流砂中Cr2O3的质量分数为20％～25％；在浇注过